Digital photo frame



FIG. 1 is a perspective view of the design for a digital photo frame;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines showing the rectangular openings in FIG. 4 are for environmental purposes only and form no part of the claimed design. 

The ornamental design for a digital photo frame, as shown and described. 